“…In such cases bleeding is due to disruption of the ventricle wall by an intracerebral hematoma or by rupture of the subependymal veins caused by negative pressure during sudden dilatation of the ventricles at the time of the trauma [2,3,7,10]. Spontaneous bleeding into the ventricles, which can occur, for example in the presence of vascular malformations localized within the arterial circle, subependymally or in the choroid plexus, are seldom observed [1,4,5,6]. A case of p r i m a r y i n t r a v e n t r i c u l a r h e m o r r h a g e is presented: this case is rem a r k a b l e b o t h in the source of bleeding a n d in the t e m p o r a l relationship bet w e e n the h e m o r r h a g e and the head t r a u m a .…”